Last Sunday, a young African drowned in Lake Lugano while a 30-year-old drowned in the Aare River in the canton of Solothurn a few days earlier.

And with the summer not yet over, there are fears the number of drownings will rise further.

Among those at risk are young men. Last year 41 people drowned in Switzerland with 31 of those victims male.

“Young men are usually more likely to take risks and overestimate their ability,” Reto Abächerli with the Swiss Lifesaving Society (SLRG) told the Blick newspaper.

He said alcohol also played a role although exact figures were unavailable.

Abächerli added the risk of drowning was even greater among young men with foreign backgrounds who “could have a different relationship with water and perhaps be familiar with bodies of water with a different temperature and currents”.

The SLRG spokesperson said the society aimed to warn swimmers from different backgrounds about possible dangers using flyers and signs in eight different languages. The flyers are available at asylum centres.